Make dungeon masters though and make oerkkis disappear when they get to you (because hitting them doesn't work for some unknown reason)

strict_protocol_version_checking setting; PROTOCOL_VERSION in clientserver.h; clean up defaultsettings.cpp and minetest.conf.example

minetestmapper: Fix the way ylist is computed, use cStringIO instead of rolling own Bytestream, remove some artifacts when drawing underground blocks, introduce a --drawunderground switch (defaults to of), 'blocknum' renamed to 'content'.

Fix single-frame lag in camera yaw/pitch, tune view bobbing and add wielded tool movement when walking and tweak stuff a bit

Fixed null pointer dereference errors found by cppcheck

Put the random interval back to 1 in 50 chance. It's not as rare as rats, but rarer than grass.

Adding (most) of the sapling functionality. It has yet to work, since MEET_OTHER was not implemented at the time of this commit. Hopefully it will work when merged with celeron's latest.

Make client report a newer version number to the server than 2011-07-31 does and make the server enforce it